TY - JOUR AU - V. S. Serov TI - Absolute convergence of series in eigenfunctions of the Laplace operator in the class~$C^{N/2}$ JO - Matematičeskie zametki PY - 1983 SP - 431 EP - 442 VL - 34 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_1983_34_3_a13/ LA - ru ID - MZM_1983_34_3_a13 ER -